TypeScript | toPrecision() Function

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The toPrecision() method in TypeScript is used to return the string representation in exponential or fixed-point to the specified precision.

Syntax:

number.toPrecision( [ precision ] )

Parameter: It represents an integer value specifying the number of significant digits.

Return Value: The toPrecision() method in TypeScript returns a string representing a Number in fixed-point or exponential notation round to precision significant digits.

Below examples illustrate the working of toPrecision() function in TypeScript:

Example 1:

<script> 
  
// toPrecision() method 
var num = new Number(6.218956);  
console.log(num.toPrecision());  
console.log(num.toPrecision(4));  
console.log(num.toPrecision(3)); 
</script> 

Output:

6.218956 
6.2189 
6.21

Example 2:

<script> 
  
// toPrecision() method 
let myNumber: number = 32.5779;  
console.log("Number Method: toPrecision()");   
console.log(myNumber.toPrecision(1));    
console.log(myNumber.toPrecision(3));   
</script> 

Output:

Number Method: toPrecision()
3e+1
32.6

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